• discourage superficial analysis, by stating explicitly the purpose of the sample student work, and by asking specific questions that relate to this purpose;
• encourage holistic comparisons by making the sample student work short, accessible and clear, and by not including arithmetic and other low-level errors that distract the students’ attention away from the identified purpose;
• make the distribution of the sample student work more effective, by perhaps sequencing it so that successive pairwise comparisons of approaches can be made;
• offer students explicit opportunities to incorporate what they have learned from the sample work into their own solutions;
• offer the teachers support for the whole class discussion so that they can identify and draw out criteria for the comparison of alternative approaches.